Elevator-signal.



R. H. GAYLORD.

ELEVATOR. SIGNAL.

APrucnmn FILED AUG. I2. 1915.

4 suns-sum a.

mum Feb. 13; 1917.

'RfH.GAYLORD.

f ELEVATOR SIGNAL. APPLICATION FILED me. n; 1915 v P111 wanted Feb.13,1917.

' UNITED STATES PATENT or FICE.

new It. eAYnoan, or PASADENA, cALIFoaNIA', A'ss mnoa To a, n GAYLORDcom- PANY, OF LOS ANGELES, CALIFORNIA, A conronA'rmNoF CALIFORNIA.-

ELEVATOR-SIGNAL.

To all whom it may concern.-

Be it known that I, Roxanna H. GAYLORD, a. citizen of the United States,residing in Pasadena, and State of California, have invented a new anduseful Elevator-Signal, of

which the following is a specification.

This invention relates to telephonic signaling means of the typedisclosed in my patent 1,185,085, granted May 30, 1916,

whereby the operators in the cars may make a down sigmills.

Another object of the invention is to provide a signaling system of thistype whereby announcement may be made at a floor without depending onprimary control by apassenger at-such floor, by closure of a push buttonor otherwlse. i

A further object of the present invention is to provide an elevatorsignaling means in which the same set of fixed contacts and circuitstherefrom are used for signaling to the landing signals or announcingmeans in both up and down movements of the car.

Another object of the invention is to simplify the operating circuitsfor the telephonic means by elimination of retardation coils andcondensers as far as practicable.

Another object of the invention is to provide, in connection with anelevator signal in which a car signal is operated by an energizingcircuit controlled from the different landings, means whereby thetelephonic circuit is energized from said energizing circuit, at thesame time maintaining operative independence of the car signal from thetelephonic means.

Another object of the present invention is to adapt a telephonicsignaling means such as disclosed in my application aforesaid for usewith mechanicaltand electrical. apparatus and circuits now in use. Ihave herein shown, for example, an adaptation of the telephonicsignaling means to the apparatus and circuits disclosed in patent to J.B. Smalley and C. A. Reiners, dated July 24,

' The accompanying drawings illustrate embodiments of my invention, andreferring thereto:

Specification of Letters Yatent.

"Switch member 3 Patented Feb. 13, 1917.

Application an August '12, 1915. Serial No. 45,093,

Figure l-is a longitudir al section of the car'operated switch.

Fig. 2 is an inverted plan view of the switch means for controllingconnection to the landing signals, taken on line 22 in Fig. 1.

Fig. 2 is detail section of the switch means for controlling the'iloorsignals.

Fig. 3 is a transverse section on line 3- -3 in Fig. l. r

Fig. 4 is a section on line 4-4: in Fig. 1.

Fig. 5 is a section on line 55 in Fig. 1.

tions.

Flg. 7 1s a diagram of the car signal means and circuit.

Fig. 8 is a side elevation of the circuit closing and resetting mear s.

Fig. 9 is a diagramof a modification of the can signal circuit.

Fig. 10 is an elevation 01 a modified form of .caroperated switch, thecircuit connections therefor being shown diagram1nati-- a special switchmeans for what purpose sub stituted therefor. Said car-operated switchcomprises a frame 1, a scniw 2, mounted to turn in said fral'ne, andconnected to the elevator operating niecl'ianism so as to move incorrespondence therewith; i. movable switch member 3 carried by saidscrew, formed as a rocking cross arm having a screw threaded hub 3'fitting said screw, frames 4 and 4' pivoted at o' ')posite endsyofsaidfcross arm and carrying res 'iectively, pairs of movable contacts 5and. 5" for controlling the carsignal circuits, and fixed (ontacts 6, 7and 6' 7 mounted on frame 1 for cooperation with the contacts and 5respectively. is 11101111136 d to tilt on screw 2, under the frn. ionalact on of the screw, so as to bring the contacts 5 or 5 at one side orthe other in contact with the fixed contacts, 6, 7, or 6, 7' as ;he'case may be, according to the direction. of motion of the screw, so thatwhen the elevator car connected to said switch is n oving down, the

Fig. 6 is a diagram of the circuit connecpair of contacts 5 willfslideon contacts 6' and 7 at one side of the switch, making connectiontherebetween, as'shown in Fig. 3, while the contacts 5 at the other sidewill ride on the contacts 7 without making connection with the contacts6, the construction and operation of these parts being the same as inthe said patent. Contacts 7 and 7' are magnets 11 and 11' in circuitwith push buttons at the respective floors, and resetting means areprovided for these mercury cup circuit closers, comprising series ofcontacts 8, 9 and 8, 9', at opposite sides of the switch, coiiperatingwith pairs of contacts '12 and 12' on the respective plates 4 and 4 andconnected to control resetting magnets 13 and 13 for the mercury cupcircuit closers, as in said patent. The rocking movement of the member 3is controlled by guide means, consisting of track rails 15, 16 and 17forming two ways for a shoe 18 on an arm 19 extending from said member3, suitable means, as shown in said patent, being provided for guidingthe shoe from one to the other of said ways when the arm is rocked byreversal of motion of the screw at either end of its travel.

My special switch means for controlling the floor signal circuitscomprises a double series of contacts 22 and 22, mounted on aninsulating switch board 24 at the top of the car-operated switch, and aswitch member 25 carrying contacts adapted to coiiperate with thecontacts 22 and 22, and operated by the main switch member 3. For thispurpose the member 3 may have a projection 27 which engages between lugs28 on member 25, so as to move the member 25 longitudinally with themember 3. Member 25 is formed as an insulating plate, carrying contacts34, 34 and 35, 35 and mounted to rock on pivots 29 on metallic shoes 30,30' which slide in metal tracks or guides 31, 31', and are heldintofrictional engagement with said tracks by a spring 32"which extends in abore 33, between the ends of the pivot portions 29 of the shoes,insulating washers 20 and 20' being inserted between spring 32 and pivotportions 29. The lugs 28 on member 25 are below the pivots 29 so thatwhen the member 3 is moving in one direction, say for up travel of theelevator car, the projection 27 on member 3 engages one of said lugs totilt the switch member 25, so that contact 34 and 34 at the forward endof member 25 will ride on; the series of fixed contacts 22 and 22, andwhen the motion of connected by an insulating pin 45 to a metalmember 3is reversed, for down travel of the car, the member.25 will be tiltedto. bring the contacts 35 and 35' at the other end thereof, into ridingengagement with contacts 22 and 22, the contacts 34 and 34 being at thistime removed from riding engagement with contacts 22 and 22'. Contacts34, 34 and 35, 35' may be formed as pins sliding in holes in member 25and having heads 37 at their lower ends engaged by springs 38 to pressthe contacts 34, 34 and 35, 35' toward the respective contacts 22 and22. The springs 38 for each pair of contacts 34 and 35 and 34 and 35 mayeach be formed of a single strip of spring metal 3 connected by a wire39 or 39 to the adjacent shoe 30 or 30, so that contacts 34 and 35 areconnected to shoe 30 and contacts 34 and 35 are connected to shoe 30. Inaddition to the series of contacts 22, end consuch series, and endcontacts 36 and 37 are provided at the ends of the series of contacts22, these end contacts being shown as comparatively long.

In connection with my improved telephonic signaling system I providemeans whereby the telephone talking circuit is energized from 'a circuitin the car which may be a signal circuit, or a lighting circuit. In theform of the invention illustrated in Fig. 6, the energizing circuit isthe circuit for the car light or lamp 40 that serves as a signal for theoperator. The telephone transmitter 41 in the car is preferably of theduplex type shown, comprising a diaphragm 42, see Fig. 7, located in aninsulating casing 41, in position to receive the sound waves fromamouthpiece 44, and

lic diaphragm 46 located between two conducting plates 48 and 47, carbon49 bein interposed between the diaphragm 46 an each of the plates 47 and48, and held in position by means 50 permitting of vibration ofd1aphragm'46. Diaphragm 46 is connected to. one side 51 of theenergizing circuitand the other side 52 of said'circuit is connected totwo branch wires or connections 53,53 leading to reactance orretardation coils 54, 54, from which wires 56 and 56 respectively leadto the transmitter plates 48 and 47. Wires 60 and 60' connect wires 56and 56 respectively to condensers 61 and 61' from which wires 62 and 62lead to the telephone connections, hereinafter described. The telephonetransmitter is thus energized from the lamp circuit 51, 52 by theconnections through the retardation coils 54 and '54, but the connectionbetween the energizing circuit and the telephone line wires 62 and 62'includes not only the retardation coils 54 and 54' but also thecondensers 61 and 61' so that on the one hand, the energizing currentbeing direct current (or of rela- 130 tively low frequency'ifalternating current) cannot pass to the telephone line wires 62 and 62'on account of the condensers in the connection, and Won 'theother hand,the telephonic current is kept from passing in sensible amount to theenergizing line by the" inductive resistance of the retardation coils.The resistance of the carbon in thetransmitter 41 is sufiicient toinsure that when two or more of the transmitters are simultaneously inconnection with the telephone receiver at the landing, the telephoniccurrent from any transmitter will not be shortcircuited by any othertransmittenthereb'y preventing the landing receiver from being renderedinoperative under these conditions. In addition to the telephonetransmitter 41,-and the signal lamp 40 each elevator car may be providedwith a disablingswitch 64, for opening the resetting connections so thata call will be left for a succeeding car if desired; and alsovwith aswitch 65 for closing the talking circuit energizing connectionsindependently of the circuit closers at the landings, so that theoperator may a call all landings as he approaches them.

a At each landing a telephone receiver 66 is provided, the same beingpreferably a loud talking or announcing telephone receiver, so that thecall or announcement given by the operator may be heard throughout thepart.

consisting for example, of a down push button 67 at the top floor, andup push button 68 at the bottom floor; and an up push button 69 and adown? push button 69' at each of the intermediate floors. said pushbuttons 69 and 69 for each floor cooperating with-a contact 69 a Acar-operated switch as above described is provided for each elevatorshaft and located for example adjacent to the top of the shaft. Thecircuit closers 10 and 10' may be located adjacent to the top of theshafts, it being understood that one set of such circuit closers issufficient for all the shafts. Each of such circuit closers may consistof a mercury cup 109 and a contact lever 110, coiiperating therewith andcar ried by or formed as the armature lever of electromagnet 13, saidlever tending to move to closed position by gravity and being moved toopen position by operation of-said electromagnet 13. When so moved toopen position it is held in such position bythe armature 111 ofelectromagnet 11, until said armature 111 is released therefrom byenergization of said electromagnet 11. The circuit connections are asfollows, as shown in Fig. 6: A wire 70 leads from a battery or sour'ceof current indicated at 71, to a switch 72, whence a wire 73 leads toone side of each of the push buttons, both for the up and down calls, ateach floor. The up push buttons for all the floors except bottomv floor,are connected respectively by wires 74 to the respective electromagnets11 for the mercury cup tlIClllt closers 10,

,at the up side of the ca? operated switch,

and wires 75 lead from slid ma ets to a :wire' 76 connected to EWlX'e 77w ich leads to the other side of the battery 71. A wire 80 leadsfrombattery wire 70 to' the disabling switch 64 in the czr, whence a wire'81. leads to the long resetting contacts 9 at the up side of thecar-oper ited switch. The

contacts 8 of said switch are connected by wires 82 to the respectiveresetting electromagnets 13, from which wires 84 lead to a Wire 85connected to the battery return wire 77. .The down push buttons for allthe floors encept the top foor are similarly provided with connections74 to the respective electromagnets 11 at the down side of thecar-operated switcl, the connections for said electromagnets beingcompleted by wires '75 and 7 6' to the b2 ttery return wire 7 7. Theresetting connections for to the long contact Si and from the contacts8' by wires 82' to resettirg electromagnets 13 and from saidelectro1nagnets by wires 8 1', 85 to battery return w ire 77. The pushthe down side leadfrom wire 81, by wire 81 buttons for the top and)ottom floors are connected to a wire 87 lez ding through resistance 88to the wire 76' connected to the battery return wire .77. A11 of theseconnections are, or may be, substantially the same aisin the patentabove leferredto, these constituting the controlling connections formitter 41 as above described. From saidtransmitter a wire 51 leads toswitch 65, from which a wire 93 leads to the long signal contact 7 at.the up" side of the caroperated switch. Contacts 6 of said switch areconnected by wires 94 to the respective mercury cup circuit closers 10,whence a wire 95 leads to current source return wire 96. A wire 93.leads from wire 93 to the 1on signal contact 7 at the down side of sai 1switch, contacts 6 being connected by wires 94' to the respectivemelcury cup circuit closers 10', whence a wire 95' leads to re turn wire96. A wire 97 leads from return wire 96 to a normally op an contact 65'of switch 65. The telephone transmitter 41 is connected by wire 62to'track 31 at one side of my special switch means, and contacts 22 atthe same side are connected by wires 99 to the telephone receivers 66 atthe different landings, whence wires 99 lead to contacts 'ceiver 100 mayalso be placed in each car,

and connected to wires 62 and 62. 101 indicates a bell, normally shuntedby switch 72, but included in circuit, by opening said switch, so thatthe bell will be sounded whenever a push button is operated, the objectof the bell being to call to the attention of the operators the factthat a passenger wishes to be taken either up or down.

The fixed contacts 22, 22 of the car-operated switch, or the wires 99,99 leading thereto, arecross connected by wires 102', 102 tocorresponding contacts or wires in the car-operated switches for all theother cars. Similar cross-connections will be provided for thecontrolling contacts 6 of the car-operated switch, as in the patentabove referred to. The wires 80, 81,91, 93, 97, 62 and 62, leading tothe car will be mounted in flexible cables or otherwise so as tomaintain connection with the car in its travel.

The operation ofthe form of my invention above described is as follows:Assuming that one of the down push buttons is closed, for example, thebutton 69 for the fourth floor, as shown in Fig. 6. Current will thenflow from battery 71 through wire 70, switch 72 and wire 73 to pushbutton 69, thence by one of the'wires 74 to the electromagnet 11'corresponding to the fourth floor and from said electromagne; by wires 75 to wire 76 and thence by wire 77 back to battery 71. Electromagnet 11being thus energized, attracts its armature 111 and allows the circuitcloser lever 10 to fall into mercury cup 109. \Yhen any elevator car, inits descending movementapproaches within, say, two floors of the fourthfloor, its contacts or brushes 5 close connections between the contact 7and the contact 6 corresponding to such floor, and a car-signal circuitis then closed as follows: from current sources 90 through wire 91signal lamp 40, wire 52, then in parallel through both wires 53, 53,both retardation,

coils 54, 54 and'wires 56, 56, and both parts of the duplex telephone 41to the central member 46; thence through wire 51, switch 65, and wires93 and 93 to long contact 7 of the car-operated switch, through thepairs of brushes or contacts 5 to the contact 6 above referred to, andthence through wire 94' to the operated mercury cup circuit closer 10,and from said circuit closer by wires 95 and 96 back to the currentsource 90. -This current energizes the signal lamp 40 therebyphonetransmitter it energizes the same so as to put it in condition. fortransmitting a call to the calling floor. If the operator intends to stoat-the calling fioor in response to this call, e will speak into thetransmitter 41, an announcement, such as Number two car down and thisannouncement will be transmitted to the telephone receiver 66 andannounced by the said telephone receiver, the current passing fromtelephone transmitter '41 through condenser 61 wire 62, to track 31 forthe car operated switch, thence through shoe 30, wire 39 and spring 38to the Contact pin 35 at one side of the switch mem ber 25. As the caris descending at this time, this switch member is operated by theprojection 27 of the main switch means so that it is tilted forward andthe forward pins 35 and 35' thereon make contact with the fixed contacts22 and 22 which correspond to afloor in advance of thecar, say to thesecond floor below the car, and the connection for the current will becontinued from forward contact pin 35 to such contact 22, thence by wire99 to the telephonic receiver or announcing telephone 66 at the saidfloor, which is the floor that has given the signal for a stop. Fromsaidreceiver the current passes through wire 99' back to a switchcontact 22, and throu h the forward contact pin 35', spring 38 wire 39',shoe 30-", track 31', wire 62' and condenser 61' back to the telephonetransmitter 41. The sound waves impressed on the diaphragm 46 of thetransmitter, cause the diaphragm 46 to move so that the resistances ofthe carbon bodies at either side of the diaphragm are inversely varied,so as to produce lnequality in the drop and inequality in electromotiveforces on the wires 56 and 56' at 105 opposite sides of the transmitter,resulting 35' aforesaid pass off of the fixed contacts 22 and 22'corresponding to the calling floor, and break the telephonic connection,but the length of these contacts is such as to provide for maintenanceof connection while the car is traversing the height of, say, somewhatmore than one story of the building. In

such continued descent of the car, the brushes 12 on the maincar-operated switch make connection between the long contact 9' and theresetting contact 8' corresponding to the calling floor, thereby closinga circuit from the battery as-follows: through wire 80, switch 64, wires81, 81', contact 9', brush 12, contact 8', wire 82', resettingelectromagnet 13 for the fourth floor, and wires 84, 85' and 77 back tobattery 71. The current through this circuit energizes resetting mag net13 and causes the armature thereof be attracted, opening the mercury cupClICIllt closer 10 and said circuit closer is then held in open positionby the armature of the electromagnet 11, the latter electromagnet beingat this time deenergized by reason of the open condition of its circuitat the push button. This completes the signaling operation, 5

same time he may announce to the calling" floor through the telephonicconnections above described, that some other car will respond to thecall. It will be seen that if two or more cars are in position to talkto any given floor at the-same time, the operators thereon maycommunicate with one another by the said telephonic communlcatlons,correspondingfixed contacts on the car-operated switches for difierentears being all cross-connected, so that any telephonic current passingfrom either transmitter to the contacts 22, 22 of the corres ondingcar-op- 'erated switch, will through t e cross connections 102, 102',pass to the telephone lines 62, 62 of said other car, and theannouncement may be heard at, or announced by the receiver 100 in suchother car.

By moving the switch 65 over to the nor mally open contact 65' theoperator may energize his pilot light regardless of whether any landingpush button has been closed, and thereby energize the telephonetransmitter in push buttons. By this means he may make an announcementat a floor in advance of the car, whether said floor has called or not,and the signal system may by this single ,s'witch be converted at anytime to a'strictly v schedule system as required for department storeswherein-thefgeneral practice is to stop the car at each the" system m ybe run during certain hours on such sche ule stops, and at other timeson call stop, by" changing the switch 65 from contact 65 to normalposition shown in en the car; reaches the bottom of the shaft andreverses its movement, the "shaft or screw 2 also reverses its rot'ativemovement, with the result that the switch member'j 3fis moved reverselyalong the screw andfis also tipped to the other side so as to makeconnection for the f up contacts'as' in thepatent referred to. At thesametime, theproje'ction 27 on said switch member engages the lugs 28 onswitch member 25 to tilt the said member 25so as to bring the contacts3A and 34 on the other end, which is now the forward-end; into ridingengagement wit-hthexcontacts 22 and 22' on the is car, independently ofsuch oor; or ifdesired switch board, sovthat connection is stillproduced to the announcing telephones in ad- Vance of the car.

Any suitable transmitter may be usedfor receiving electric energy fromthe car signal .or other supply circuit and transmitting telephonicimpulses to the telephonic circuit, while maintaining tl 1e operativeindependence of such circuits. For example,

' the transmitter shown in I ig. 9 maybe used.i

comprising two duplex telephones 137 an 138, similarto the one ab vedescribed, having their outer conductors 140, 141, 140 and 141 reverselyconnected by wires 128 and 129 to the supply leads 130 and 131, and

having their mtermediah: diaphragms 132 and 133 connected by w; res 131, and 134: respectively to condenses 135 and 135,

which are in connection v ith the telephonic circuit, resulting inimpulses being sent over the telephone line.

I am aware that eleval or signal systems have heretofore been usedwherein moving contacts travel back and fDItll on a series of fixedcontacts,butin these systems independent switch means are provided tomake a portion of such contacts inoperative, by disconnection of thecommon supply circuit. An important feature of my invention as abovedescribed, is the p: 'ovision of a caroperated switch, namely, theswitch comprising the fixed contacts 552 and 22' and the switch member25 with the contacts thereon, which makes connection for signaling orcommunicating, in both he up and down movements of tilt car, by :neansof the same set or series of fixed contacts, the moving contactstraveling in the same path in both up and down movements. When saidconnection is made with any of said fi'ired condescribed, is applicablein connection with" any formof car-operated switchand either" inconjunction with, or independently of,

any car signal means. 1:1 Fig. 10, I have jfl shown a simple embodimentof the inven tion,jcompris1ng a switch similar in all respects to theswitch 25 above described, and

arranged vertically, so as to be moved up or down by engagement 01 avertically moving actuator 113 with proj actions 114 on the tiltingmember 115' of said switchg Said actuator consists "of afla age on avertical tube 116 mounted to telescope on a fixed vertical tube 117,said tubes inclosing a spring 119 which is connected at opposite ends tothe tubes, so as to draw them together. A suitable flexible weightedmember, for example a cable, is connected to the elevator car 118 and tothe lower tube 116 so that in the ascent and .descent of the car more orless of the weight of'the cable will be Sus pended 'fromthis tube andthe tube will therefore be'drawn down, against the action of spring 119,as the car descends, and will be raised by the spring as the carascends. This motion of the tube 116 is communicated to the switchmember 115 through the members 113, 114 aforesaid, resulting in tiltingsaid switch member on the carrying means or shoes 120 and in causing theshoes to travel in tracks 121 so as to move the contact ins 122 on saidswitch member along the xed contacts 123..- Said fixed contacts areconnected by wires 99 and 99' to the announcing telephone receivers atthe respective floors. The contact pins 122 on switch member 115 areconnected by springs 124 to wires 125 leading through the cable orindependently thereof, to the telephone transmitter 141 in the car,which is similar to the transmitter 41 above described, but in this caseis energized by connections 126,

126', directlyfrom-the car-lighting ci'cuit opening.

wires. I v p One ofthe important advantages of the present invention isthe notable saving in 'cost of material and labor, as regards that partof the system relating to the signaling to the waiting passenger. Itwill be seen that for the connections from the car-operated switches tothe floor signals but two wires are required at each floor landing forthe entire bank of cars, and but .one fixture, (in this case a telephonereceiver), as compared with systems now in use which require for theconnections from the caroperated switch to the floor signals two wiresfor each hatch opening, besides one common wire, and also a fixture foreach A further saving is effected by my 'invention in that the wiringfor the landing signals, including the connection to the car transmittermay conform to standard telephone practice, paired wires being usedwhich are relatively inexpensive compared with the wiring required forthe usual signal lamps. By using twisted pair wiring the furtheradvantageis secured that both sides of the circuit have the same.resistance and capacity and the inductive influence of extraneouscurrents .is avoided. This construction, b'ein according to well knowntelephone pract1ce,is not shown in the drawings, the wires being shownsep'arate, for clearness of illustration,

What I claim is: 1. An elevator signaling'system-comprlsapproaches suchlanding.

.ing a car signal, landing circuit closers, a

2. An elevator signaling system comprising a car signal, landing circuitclosers, a car operated switch comprising separate series of fixedcontacts for up and down movement of the car, and movably mounted switchmeans provided with contacts to cooperate with said up contacts in the.up movement of the car and with contacts to cooperate with said downcontacts inthe down movement of the car, another series of fixedcontacts, a movably mounted switch member adapted for ogeration by theaforesaid switch means'an provided with contacts to cooperate with saidlast named series of contacts in both the up and down movements of thecar, and call receiving means at the different landings connected tosaid last named series of contacts to receive current from the samecontacts in both up and down movements of the car.

3. An elevator signaling system compris-' ing a car signal, circuitclosers for different floors, a car-operated switch comprising Iseparate series of fixed contacts for up and down movement of the car,and a movably mounted switch means provided with contacts forcooperation with the said up contacts in the up movement of the car andwith contacts for cooperating with said down contacts in the downmovement of the 110 car, electrical connections controlled by saidcircuit closers and by said contacts of the car operated switch tooperate the car-signal as the car approaches a landing for which thecircuit closer has been operated, a tele- 115 phone transmitter in thecar, telephone receivers at the landings, a series of fixed contactsconnected to said receivers and a mov- "operated switch comprising aseries of fixed contacts arranged in two rows, opposite contacts in'tlierespective rows bemg respectively'connected to opposite sides of therespective call receiving devices, a movably 1 0 mounted-switch memberadapted for operaoperated switch comprising a series of fixed Contactsconnected respectively to said receivers, a movably mounted switchmember adapted for operation in opposite directions in a single path bythe up and down movements of the elevator car and provided with contactsfor cooperation with said series of I contacts in both directions ofmovement, and

a telephone transmitter in the car connected to said contacts on themovably mounted switch member.

6. In an elevator signaling system, a car signal, a circuit forenergizing the same, a transmitter in the. car, connections includingreactance means for energizing said transmitter from said signalenergizing circuit, a telephonic receiver and connections includingcondenser means between said transmitter and said receiver, whereby thetelephonic devices are energized from the 'signal operating circuit butthe telephonic and signal circuits are independent in operation and a'car-operated switch controlling the circuit for the signal and alsocontrolling the connections for the telephonic receiver, so as toestablish the telephonic connection when the signal is energized.

7. In an elevator signaling system, a caroperated switch comprisingaseries of fixed contacts corres onding to difierent floors, meansmounted to slide in opposite directions in the same path in the up anddown .movements of the car, switch means movably mounted on said slidingmeans and carrying contacts adapted to engage with the said series offixed contacts in both directions of movement of said sliding means,

and car-operated means engaging said switch,

means to change its position on the said sliding means as the movementof the car is reversed, so that the contacts on said switch means engagewith fixed contacts for a floor in advance of the position of the car,in either direction of movement of the car.

81 In an elevatonsignaling system, escaroperated switch comprising atrack means,

i carrier means mountedtd slide frictionally in said track means, aswitch member mounted to'rock on said carrier means, and carryincontactsarranged in different longitudina positions thereon, fixedcontacts arranged in the path of the aforesaid contacts, andcar-operated means for engaging with said rocking member to rock the,same to bring the more advanced contacts'thereon into cooperatingrelation with the fixed contacts, and to move the rocking member withits carrying means longitudinally on said track means.

9. In an elevator signaling system, a single call receiving YIN ans ateach floor for up and down calls, a p .urality of elevator cars providedwith call transmitting means, and means comprising connections fromthecall transmitting means of all the cars to each call receiving meatsadapted to maintain receptive condition of such call receiving means fora call from the transmitter in any car aftersa1d call t'ecelving meanshas responded to a call irom the transmitter in another car. 1 v

10. In an elevator signaling system, a single call r ceiver at ea chlanding for receiving both up and down c: .lls, a car, a car operatedswitch comprising series of contacts connected respectively to said callreceivers, and a switch member adapted to cooperate with the said seriesof contacts in both up and down movements of the car, and meansconnected to said switch member for supplying current thereto foroperating the call receivers.

11. In an elevator signaling system, a call receiver ateach of aplurality of landings, a a

car, a call transmiter on a car, and a caroperated switch andconnections controlled thereby for connecting the transmitter to thereceiver at any land ng as the car approaches the. same from eitherdirection.

12. In an elevatoi signaling system, atelephone receiver at each of aplurality of landings, a car, a telephone transmitter on a car, and acar-ope rated switch comprising contacts connected to said receiver anda switch member op arated by the car and adapted to cooperate with thesame contacts in either direction of movement of the car to connect saidtransmitter in the car to the same receiver at a landing in both up anddown movements 01 the car.

13. In an elevator signaling system, telephone receivers at t 1elandings, a car, a telephone transmitter in the car, a car-operatedswltch provided with contacts-connected .to

said receivers, and direct connections from the transmitter in the carto the car-operated switch, whereby the connection between thetransmitter and the receivers may e controlled only by the car-operatedswitch.

14. In an elevator signaling system, a plurality of cars, telep honetransmitters in the cars,'telephone rece: vers at the landings, and

a car-operated switch, means comprising circuit connections controlledby said circuit closers and said car-operated switch, to establishcommunication between said transmitters and receivers, and a switch andconnections controlled thereby for closing connection between thetransmitters andthe receivers independently of the said circuit closersfor the landings.

16; In an elevator signaling system, a plu rality of cars, telephonetransmitters and receivers in the cars, a landing receiver, a

car-operated switch and circuit connections controlled thereby to putthe telephone transmitters and receivers of different carssimultaneously in connection with a landing receiver, whereby thetelephonic call 3 given by the operator in one car may be heard by theoperator in another car.

17. In an elevator signaling system, a car, a call transmitter in a car,a car-operated switch, a floor landing call receiving device, andcircuit connections controlled by said car-operated switch, whereby thefloor landing call receiving device is made receptive to signals fromthe call transmitter in the car, by the movement of the car in eitherdirectionl 18. In a multiple car elevator signaling system, a pluralityof cars, a single call receiving device at each floor, and meanscontrolled by the movement of the cars for making said call receivingdevice receptive to calls from allthe cars, in either direction .oftravel of the cars. v

19. In an elevator signaling system, a plurality of cars, a car-operatedswitch, a call transmitter in each car, and a single call receiver at alanding, connected to said switch, so as to be receptive to calls ineither direction of movement of said car, the same circuit connectionsserving for operation of the said call receiver in either direction ofmovement of said can,

20. In an elevator signaling system, a plurality of cars, a car-operatedswitch, means comprising circuit connections and including calltransmitters in different cars, and a single receiving device at alanding receptive to signals from any of the cal transmitters,independently of the operation of the other call transmitters.

21. In an elevator signaling system, a plurality of cars, a car-operatedswitch, means comprising circuit connections and including calltransmitters in different cars, and a single receiving device at alanding adapted to receive signals from more than one of said calltransmitters in the cars, in such manner that operation of said callreceiving device by any call transmitter will not interfere with thereceptiveness of said call receiving device to a signal from any othercall. transmitter.

22. In an elevator signaling system, a plurality of cars, a car-operatedswitch, means comprising circuit connections and including calltransmitters in different cars, telephone receivers at the landings,telephone transmitters in the cars, and an energizing circuit forenergizin said transmitters independently of manual control by the caroperators.

23. In an elevator signalin system, a plurality of cars, a car-operateswitch, means comprising circuit connections and including calltransmitters in different cars and circuit closers at the landings,telephone receivers at the landings, telephone transmitters in the cars,an energizing circuit for said transmitters, and circuit closers in thecars, whereby a car circuit closer or a landing circuit closer maycollectively or independently energize one of the car transmitters.

In testimony whereof I lave hereunto set my hand, at Los Angeles,California, this 6th day of August 1915.

ROBERT GAYLORD.

